Merge branch '5.0' into 5.1

* 5.0:
  Update messenger.rst
  Fix supportsNormalization parameters definition

Author: javiereguiluz

messenger.rst

@@ -963,7 +963,7 @@ The transport has a number of options:
         $container->loadFromExtension('framework', [
             'messenger' => [
                 'transports' => [
-                    'async_priority_high' => 'dsn' => '%env(MESSENGER_TRANSPORT_DSN)%?queue_name=high_priority',
+                    'async_priority_high' => '%env(MESSENGER_TRANSPORT_DSN)%?queue_name=high_priority',
                     'async_priority_low' => [
                         'dsn' => '%env(MESSENGER_TRANSPORT_DSN)%',
                         'options' => [

serializer/custom_normalizer.rst

@@ -47,7 +47,7 @@ to customize the normalized data. To do that, leverage the ``ObjectNormalizer``:
             return $data;
         }
 
-        public function supportsNormalization($data, $format = null)
+        public function supportsNormalization($data, $format = null, array $context = [])
         {
             return $data instanceof Topic;
         }